Rev. 1.20

�

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Rev. 1.20

7

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HT48RA0-6

Remote Type 8-bit MCU

HT48RA0-6

Remote Type 8-bit MCU

Pin Description

Pin Name

I/O

Configuration

Option

Description

PA0~PA7

I/O

—

Bidi�e�tional 8-bit input/output po�t wit� pull-�ig� �esisto�s. Softwa�e

inst�u�tions dete�mine if t�e pin is an N�OS output o� S��mitt T�igge�

input. Each pin can have a wake-up function if configured as an input pin.

PB0~PB3

PB5/OSC2

PB�/OSC1

PB7

I/O

OSC

Bidi�e�tional 7-bit input/output po�t wit� pull-�ig� �esisto�s. Softwa�e

inst�u�tions dete�mine if t�e pin is an N�OS output o� S��mitt T�igge�

input. Each pin can have a wake-up function if configured as an input

pin. PB5 and PB� a�e pin-s�a�ed wit� t�e exte�nal ��ystal pins named

OSC2 and OSC1 respectively determined by a configuration option.

PC0/RES

ST

RES

Bidi�e�tional 1-bit input/output po�t wit�out a pull-�ig� �esisto�. Softwa�e

inst�u�tions dete�mine if t�e pin is an N�OS output o� S��mitt T�igge�

input. This pin has the capability of wake-up when it is configured as

an input pin. PC0 is pin-s�a�ed wit� t�e exte�nal �eset pin named RES

determined by a configuration option.

RE�/RE�DRV

O

RE�/RE�DRV

Ca��ie� output dual fun�tion pin. RE� is a C�OS �a��ie� output pin

wit� an initial low level afte� a �eset. RE�DRV pin is a �ig� sink �u��ent

N�OS open drain carrier output pin which will be in a floating condition

afte� a �eset. T�e sele�tion of RE� o� RE�DRV is dete�mined by a

configuration option.

VDD

—

—

Positive powe� supply

VSS

—

—

Negative powe� supply� g�ound

VSS1

—

—

Negative powe� supply� g�ound of RE�/RE�DRV pin.

Absolute Maximum Ratings

StorageTemperature....................................................................................................-50˚Cto125˚C

OperatingTemperature..................................................................................................-20˚Cto70˚C

TotalPowerDissipation........................................................................................................ 500mW

Note:Thesearestressratingsonly.Stressesexceedingtherangespecifiedunder"AbsoluteMaximum

Ratings"maycausesubstantialdamagetothesedevices.Functionaloperationofthesedevicesat

otherconditionsbeyondthoselistedinthespecificationisnotimpliedandprolongedexposureto

extremeconditionsmayaffectdevicesreliability.